1620468723 has 8 divisors (see below), whose sum is σ = 2171820688. Its totient is φ = 1074714624.

The previous prime is 1620468719. The next prime is 1620468727. The reversal of 1620468723 is 3278640261.

It is a happy number.

1620468723 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1620468719) and next prime (1620468727).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1620468723 - 2² = 1620468719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620468727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398790 + ... + 1399947.

It is an arithmetic number, because the mean of its divisors is an integer number (271477586).

Almost surely, 2^1620468723 is an apocalyptic number.

1620468723 is a deficient number, since it is larger than the sum of its proper divisors (551351965).

1620468723 is a wasteful number, since it uses less digits than its factorization.

1620468723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798933.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 1620468723 is about 40255.0459321561. The cubic root of 1620468723 is about 1174.5735523234.

The spelling of 1620468723 in words is "one billion, six hundred twenty million, four hundred sixty-eight thousand, seven hundred twenty-three".